public void Execute_ValueNonExistentFunction_ErrorReturned()
{
var fs = new FunctionStorage();
var command = new ValueFunction("Name", 2);
const string expectedResult = "Name не найдена";
Assert.AreEqual(expectedResult, command.Execute(fs));
}
public void Execute_ExistingFunction_ValueWillBeCalculated()
{
var fs = new FunctionStorage();
fs.Add("Name", new Linear(2, 1));
const double point = 2;
var command = new ValueFunction("Name", point);
var res = command.Execute(fs);
const string expectedResult = "Значение Name в точке 2 = 5";
Assert.AreEqual(expectedResult, res);
}